Device for imparting rotary motion.



- Patented Dec. I8, I900.

a. A. nvo. DEVICE FOR IMPARTING ROTARY MOTION.

(Application filad Oct. 14, 1899.)

2 Sheets-Sheet l.

,/A/VENTOH 6% 7?! ATTORNEYS (No Model.)

1 me-sass.

a: mamas PEYFJiS ca, FNDTOLITHQ wAsnlNamm n. c.

No. 664,028. Patented Dec. 18, I900.

G. A. BYD.

DEVICE FOR 'IMPARTING ROTARY MOTION. (Application filed on. 14, 1899.)

{No Model) 2 Sheets-Sheet 2,

I" J ,Q?

III iluuumnuyujfj j &

WIT/vases. i m W k I 6 W A TTOA'WE Y5 m: uonms mg-Zns on. mmutuouWASHINGTON n. c.

GUST-AF ADOLF RYD, or STOGKHOLM, SWEDEN.

DEVICE FOR IMPARTI NG ROTARY MOTION.

SPECIFICATION forming part of Letters Patent No. 664,028, dated December18 1900- Application filed October 14, 1899- Serial No. 733,659. (Nomodel.)

To all whom it may concern.-

Be it known that I, GUS'IAF ADOLF RYD, engineer, (Nya AktiebolagetAtlas,) of Stockholm, in the Kingdom of Sweden, have invented certainnew and useful Improvements in Devices for Imparting Rotary Motion withVariable Speed to Rotating Parts of Machines; and I do hereby declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to letters of reference marked thereon, whichform a part of this specification.

This invention relates to a device by means of which one part of amachine rotating at a constant speed is enabled to impart rotary motionwith variable speed to another part.

In the accompanying drawings, Figure 1 is a side elevation with theshaft in section, and Fig. 2 is a plan view with parts in section,showing how the rotary motion of a pulley running at constant speed istransmitted to a shaft. Fig. 3 is a transversesectiom'and Fig. 4 ahorizontal section, showing the transmission of motion from one shaft toanother.

In the arrangement shown in Fig. 1 the pulley a is fast on the hub ofthe frictiondisk I), which latter is loose on the shaft 0. A fixed ringn limits the endwise movement of the disk. Upon the shaft 0 a secondfriction-disk d is keyed at a certain distance from the friction-disk b.Between'these two friction-disks is placed a frame or ring e, mountedwith capability of rotation upon another ring f. The rings thus combinedtogether are placed at an angle between the disks 1) and d in such amanner that the projecting sides of the ring f lean one against the diskI) and the other against the disk. d. When the disk 19 rotates, itcauses the ring f to rotate within the stationary frame 6. The ring fthen communicates its rotary motion to the disk d, which causes theshaft 0 to revolve. The ring e, supporting the friction-ring f, is belowturnably secured to a solid arm n. At the upper edge the ring 6 isprovided with a handle 0, by means of which the same may be turned insuch a manner that the frictionring f will occupy different positionsbetween the disks 1) and (1, corresponding to the desired speed of same.A curved way p serves as a guide for the handle 0, which may be adjusted to different points thereof.

The frame a, with its friction-ring f, may be adjusted and held inposition between the disks 1) and d by any appropriate contrivance, suchas a screw or the like, as shown in Fig. 2 at m. When the ring is in theposition shown at Fig. 1, it will be obvious that the shaft 0 mustrevolve slower than the pulley a, owing to the point of contact betweenthe ring fand disk I) being nearer the center than that of the ring andthe disk d. The speed of the shaft must therefore increase in proportionas this latter point of contact approaches the shaft and the formerrecedes therefrom. When the center of the ring f coincides with thecenter of the shaft, the speeds of the shaft 0 and the pulley a becomeuniform.

The device hereinbefore described may also usefully serve as a coupling;but in such case the frame e must not only be movable endwise, ashereinbefore described, but it must be' adapted to be moved sidewise insuch a manner as to interrupt the contact between the sides of the ringf and the two disks 1) and d, respectively, in order to uncouple themechanism. With this coupling it will be possible before coupling up todetermine the speed which it is desired to impart to the drivenmechanism.

In the arrangement illustrated in Figs. 3 and 4 different speed istransmitted to two disks secured to different shafts. Thefriction-rings, as well as the disks 1) and d, are surrounded by acovering g, which forms at the same time journals for the shafts g and hof the disks 1) and d. In the covering q there is, moreover, journaledthe screw 7', on which, like a support, the journal 'm of thefriction-rings is movable. The screw r can be turned by means of thecrank s. It may be easily understood how the friction-rings are movedbetween the disks b and d when the screw 1* is turned.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is 1. In combination, the driving and driven disks facingeach other and axially in line,

disk to the face of the other disk, and means for adjusting thetransmittingring transversely, said ring touching the surface of onedisk at a point diametrically opposite the point of contact between thesaid ringand the surface of the other disk, as described.

In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing witnesses.

. GUSTAF ADOLF RYD. Witnesses:

CARL P. GERELL, 0. T. WAURINSKY.

